The invention pertains to a method for retrieving at least one piece of information regarding a telephone communication between at least two telephone terminals (2, 3) belonging to different users (20, 30) via a communication server (1), from at least one of the telephone terminals (2, 3). The invention further pertains to the corresponding communication server (1). The inventive information retrieval method comprises the steps of the communication server detecting the closing of communication by one of the users (20, 30) and the communication server (1) activating, for at least one of the users, an information retrieval service (1). The retrieval service comprises, for each of the users (20, 30) for which it is activated, the steps of selecting a form based on a criterion, submitting the form to the user (20, 30), and transmitting the completed form, along with said at least one piece of information, to a database (4).